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10th Class Science Sample Paper Science Olympiad Model Test Paper-20

  • question_answer
    In which of the following cases a decomposition reaction will take place?

    A) When iron is heated with sulphur

    B) When ammonia reacts with hydrogen chloride

    C) When calcium oxide reacts with water

    D)  When calcium carbonate is heated

    E)  None of these

    Correct Answer: D

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